Refrigerating apparatus



mark g, @932.

H. EICHE 'REFRIGERATI NG APPARATUS Filed Sept. 29, 1928 ammm 2Sheets-Sheet 2 g a I m I Patented Mar. 8, 1932 I UNITED STATES PATENToral c13 na noma D. mean, or DAYTON, 0210, assxe non, 'ro rnmrmuanconrona'rron, or DAYTON, 0310, a conrorwrron or DELAWARE I BEFRIGERATINGAPPARATUS This invention relates to'refrigeratin apparatus and moreparticularly to a ca inet for a mechanical refrigerating system. In theconstruction of cabinets for the use 6 of mechanical refrigeratingsystems, it often happens that the inside lining, which is generallyporcelain enameled, is damaged, and unless this lining is removablewithout disturbing the major part of the cabinet, it is a costlyoperation to repair the damage.

Also, because of the extremely low temperatures maintained in therefrigerator cabinet, condensation occurs in the insulation immediatelyadjacent the lining, with the result that the insulating valueof theinsulation Y and its quality are impaired.

It is an object of this invention to overcome these diin'culties byproviding a lining which ma be removed asa unit without disturbing tiemajor part of the cabinet and also to provide a lining which has acertain part of the insulation hermetically connected thereto, so thatmoist relatively warm air cannot circulate into this insulation to condense its moisture therein.

Further objects and advantages of the present invention will be apparentfrom the following description, reference being had to the accompanyingdrawings, wherein a preferred form of the present. invention is clearlyshown.

In the drawings Fig. 1 is'a vertical cross sectional view of a cabinetembodying features of this invention; r v

' Fig. 2 is a horizontal cross sectional view taken along the line 22 ofFig Fig. 3 is an enlarged-horizohtal cross sectional view of a slightlymodified form of the cabinet, and Fig. 4 is a view, similar to Fig. 3 ofa further modificatio l 'A' refrigerating apparatus embodying featuresof my invention may comprise a cabinet in which part, or all, of amechanical refrigeratin system is placed, In the par- 7 V ticular emodiment herein shown, the appamus may comprise a cabinet having a lininggenerall desi ated-as 21 in which art of the refrigerating system isplaced. he rel C. Holbrook and Henry frigerating system may include acooling unit generally designated as 22 supported within the lining 21,which cooling unit is ada ted to cool the air in the lining 21. The 'cooing". unit may include a float valve controlledfific evaporator of thetype well known in the art and the refrigerating system may, if desired,be of the type known in the trade as an automatic flooded system.- f Q,The cabinet maybe provided with an'outer '60 casing'whi'ch may be casing23 or under certain conditions, casing 24. In this,particularembodiment, the lining 21 may be part of a readily removable unit whichmay be removed from the cabinet as a whole without" disturbing the majorportion of the cabinet.

As aparticuIarway to accomplish this construction, the removable unitimay include the lining 21, insulation 25,- casing 24 and a door jamb 26.The unit which is thus removable as a wholemay be connectedto thecabinet by means ofan outer door --frame,27 to which the door jamb 26may be secured by any suitable means, not shown such as screws or bolts.The outer door frame may in- 7 clude the cabinet corner uprights 27a ex-.tending substantially the full lengthofthe cabinet, and horizontalframe members 276, joining the members 27 a. The cabinet may alsoinclude rear corner'uprights 28 which 80. togetherwith the outer doorframe 27 and the I horizontal members 29, 29a and 29b and side piecessimilar to members 29, 29a and 29?) which join members 28 and 27a, mayform the framework for the'cabinet. If desired, a 8 front bottomhorizontal frame member 270' may also be used. The general constructionof the framework and of the casing 23 may. resemble somewhat theconstruction of the cabinet shown in theapplication of William P.Braeutigam, Serial No. 257,989, filed February 29, 1928.

The construction of the cabinet may resemble the cabinet described inthe above-men tioned ap lication, but may be modified'in some-details.For instance insulating members 30 may be attached to the framework orto the outercasing instead of being attached to the lining. A convenientmethod of doing this is to secure deadening boards '31 to the uprightmembers 28 and 27a and thereafter to a tach the lining, such as slabs ofrock cork or corkboard 30, to the deadening members 31 by means ofbituminous cement. The rear portion of the insulation 30 may be attacheddirectly to the rear panel 32 without interposing deadening material 31,since the panel 32 neednot be porcelain enameled. The bottom member ofinsulation 30a may be secured to a panel member 33 by similar means asthe rear member. The top member 30?) of insulation may be secured todeadening material 31 in a manner similar to the side pieces. As morefully described in the application heretofore mentioned, the panelscomprising'the outer casing, which may be porcelain enameled on theexterior, are individually removable from the cabinet without disturbingadjacent panels. Thus the front panels 33, 34, 35 and 36 may be removedfrom the cabinet without disturbing the side panels. The unit, which inthis particular embodiment includes the lining 21, insulation 25, casing24 and door jamb 26 may be removed from the cabinet merely by firstremoving the panels 33, 34, 35 and 36 and by releasing the suitableattaching means between the door jamb 26 and the outer door frame 27after which the unit maybe removed in the direction of the door openingwithout disturbing the major portion of the cabinet.

Another feature of this invention includes the forming of an insulatedlining with a metal casing around said lining formin a hermeticallysealed space between the lining of the casing in which insulation isplaced and which is provided with means for preventing the flow of heatbetween the lining and the casing. As a specific embodiment the lining21 may be secured to the door jamb 26 which may be made of insulatingmaterial such as wood. The casing 24, whlch under certain conditionsmight be the outer casingof the cabinet, may also be secured to the doorjamb- 26. The lining 22 may be hermetically connected to the door jambby any suitable means, for instance, by interposing a suitable gasket40. The outercasing 24 may be hermetically connected to the door jamb26, for instance, by gasket 41. Both the lining and the casing 24 may besecured by any suitable means to the door jamb 26 such as by nails orthelike, care being taken not to destroy the seal. Insulation 25 may beplaced around the lining 21 before the casing 24 is placed around thelining. When thus completed, the lining 25 is hermetically sealed withinthe space formed by the lining 21 and the casing 24 in a manner toprevent condensation of moisture; in the insulation 25. If desired,hydrolene may be poured on the joints between the door jam 26 andmembers 21 and 24 to further insure the formation of a hermetic space.The hydrolene might be applied to the space 54a, Fig. 3, before theapplication of the insulation 25.

When insulation is included in an outer cabinet around the removableunit heretofore described, the thickness of the insulation 25 may besuch that the temperature at the casing 24 is not sufiicient to condensemoisture in the insulation 30. When such is the case, the insulation 30need not be hermetically sealed. However, should it be desiredabsolutely to insure against condensation of. moisturein the insulation30, a second metallic casing 50 may be placed in side of the insulation30 as shown in Fig. 3. The casing 50 may be secured to the outer doorframe 27 by providing a flange 51 and a gasket 52 which may be attachedto the frame by means of nails 53. The insulation 30 may be secured tothe casing 50 by means of asphaltic cement and the outer surface of theinsulation 30 may be covered by asphaltic cement, not shown, after whichthe deadening material 31 may be secured to the cabinet frame on whichthe porcelain enameled panels may rest. The other details shown -in Fig.3 are similar to those shown in Figs.

posed the gasket 41. Attaching means such as nails or screws 58 may beused to secure the casing 24 to the door jamb 26. Finishing strips 59may be placed aroundthe interior of the door jamb 26 and securedthereto, thus covering the joints formed by this construction. The panel33 may be provided with a flange 60 adapted to fit over a corner of thedoor jamb 26 and this flange may be secured by means of nails 61. InFig. 4 the insulation 30 is shown as being hermetically sealed on theinterior by means of hydro-- lene or other asphaltic cement 62 whichperforms the same functions as the casing 50. In all of themodifications, a gasket 63 may be interposed between the door j'amb 26and the outer frame 27. The compartment 70 may be used, if desired, forthe refrigerant liquefying unit in the manner described in theapplication hereinbefore referred to.

If a drain pipe is to be used, it may be formed by the 1pe 71. This pipeis adapted to fit in a readily detachable pipe fitting 72 passingthrough the lining 21 and casings 24 and 33. This fitting may be-of thetelescoping threaded variety for hermetically clamping its flanges tothe lining 21 and casing 33. A loop may be provided for trappingwater'to prevent warm air from flowing into the food compartment throughthe fitting 72. When it is desired to remove the removable unit, thefitting 72 may be disconnected before or during the other removal Ioperations. While the form of embodiment of the invention as hereindisclosed constitutes a preferred form, it is to be understood thatother forms might be adopted, all coming within the scope of the claimswhich follow:

What is claimed is as follows:

1. A refrigerator cabinet including an outer casing, provided with anopening, a closuie for said opening, insulation Within said casingforming a pocket, a unit removable as a Whole from said pocket, saidunit comprising an inner lining, a metal casing around said liningforming a hermetically sealed space between said lining and said casing,insulation in said space, and a door jamb of insulating material securedto said unit separating said lining and casing.

2. A refrigerator cabinet including an outer casing, insulation withinsaid casing forming a pocket, a unit removable as a Whole from saidpocket, said unit comprising an inner lining, a metal casing around saidlining forming a hermetically sealed space between said lining and saidcasing, and insulation in said space.

3. A refrigerator cabinet comprising an outer wall structure providedwith an open ing, a closure for said opening, a lining unit within saidwall structure, said unit including an inner metal liner, a metal casingaround and spaced from said lining, means hermetically sealingthe'sp'ace between said metal casing and said liner, insulating'materialwithin said space, said lining unit being removable as a unit fromtheopening in said wall structures.

In testimony whereof I hereto aflix my signature.

HAROLD D. EICHE.-

